Suggested Switching Solution Suggests Single Phase Operation Of GANG Operated Circuit Breaker
(Doc ID 2655876.1)
Last updated on APRIL 03, 2020
Applies to:Oracle Utilities Network Management System - Version 126.96.36.199.0 to 188.8.131.52.0 [Release 2.3]
Oracle Network Management for Utilities - DMS - Version 184.108.40.206.0 to 220.127.116.11.0 [Release 2.3]
Information in this document applies to any platform.
On : 18.104.22.168.0 version,
Suggested Switching solution suggests single phase operation of GANG Operated Circuit Breaker
While using FLA, when Fault is confirmed on single phase conductor and selected 'Isolate and Restore' option for the Faulted conductor, Suggested switching is suggesting to open the nearest upstream single phase fuse (to isolate the faulted conductor) and close only single phase of feeder head Circuit Breaker (to restore the remaining network).
The recommended switch plan should not have a step to operate a single phase of a gang switch
The issue can be reproduced at will with the following steps:
1.) Simulate a Fault by giving fault current on any breaker
2.) Open the selected breaker (assuming the breaker is tripped because of fault)
3.) Reset study session with Real-time for DMS
4.) Open fault location analysis for the created F-NEW and select any single phase conductor and then 'Confirm Fault'
5.) Select 'Isolate and Restore' option for the single phase conductor.
6.) In Tie-Switch selection window, move the Breaker to top and click next.
7.) Observe that the solution contains single phase operation of the breaker (close) to restore the network.
Here breaker is configured as GANG operated, but Suggested switching solution is trying to operate only single phase of the breaker.
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